145261339 has 2 divisors, whose sum is σ = 145261340. Its totient is φ = 145261338.

The previous prime is 145261321. The next prime is 145261343. The reversal of 145261339 is 933162541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145261339 - 2⁷ = 145261211 is a prime.

It is a super-2 number, since 2×145261339² = 42201713216145842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145261309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72630669 + 72630670.

It is an arithmetic number, because the mean of its divisors is an integer number (72630670).

Almost surely, 2^145261339 is an apocalyptic number.

145261339 is a deficient number, since it is larger than the sum of its proper divisors (1).

145261339 is an equidigital number, since it uses as much as digits as its factorization.

145261339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 34.

The square root of 145261339 is about 12052.4412050008. The cubic root of 145261339 is about 525.6742225080.

The spelling of 145261339 in words is "one hundred forty-five million, two hundred sixty-one thousand, three hundred thirty-nine".